Wanting to create your own grain spawn to go with your monotub? We've got you covered with this grain spawn kit designed specifically for your 50-70 liter monotub.  There's enough grain and gypsum in this kit to create up to 1200 grams of grain spawn.  Included in the kit:

• 600 grams of our organic, non-GMO rye grain
• 30 grams of pelletized gypsum

Not sure if this is the correct amount of grain for your tub? Have no fear, check out the monotub calculator here.